Experimental study of tilting pad journal bearing—rotor system with acoustic emission technique

Zhang, G-H; Liu, Z-S; Xw, Wang; Xu, H-J

doi:10.1243/13506501jet616

Cited by 2 publications

(3 citation statements)

References 10 publications

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“…Stiffness and damping coefficients. By assuming the small perturbation on a rotor center, Jang and Kim 24 proposed a method for calculating the linearized fluid film stiffness and damping coefficients which can be expressed as equations (15) to (20). Table 1.…”

Section: Performance Characteristicsmentioning

confidence: 99%

“…To investigate the impact between the shaft and the pad while the shaft is rotating, Zhang et al. 20 conducted an experimental study on the tilting pad journal bearing-rotor system with acoustic emission technique. Based on the theoretical and experimental methods, Lund 21 provided a review for the determination of rotor-bearing dynamic characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…Using a symmetrical single-disk rotorbearing system as a model, Zhao et al 19 conducted a numerical analysis to investigate non-linear transient and unbalanced responses. To investigate the impact between the shaft and the pad while the shaft is rotating, Zhang et al 20 conducted an experimental study on the tilting pad journal bearing-rotor system with acoustic emission technique. Based on the theoretical and experimental methods, Lund 21 provided a review for the determination of rotor-bearing dynamic characteristics.…”

Section: Introductionmentioning

confidence: 99%

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Influence of dissimilar radial clearances on the performance of hydrodynamic rotor-bearing systems considering misalignment effects

Cao

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part J:

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Influence of dissimilar radial clearances of the two end bearings on the performance of hydrodynamic rotor-bearing systems is investigated in the present paper. The rotor misalignment effects are considered. A parameter ξ is introduced to measure the dissimilar level and three typical applied points ( Case Left, Case Center, and Case Right) of external load are also investigated during the analysis. Finite difference method is adopted to solve the Reynolds-type equation and verification of the solution technique is conducted by comparison with previous work. The rotor equilibrium postures are solved at different dissimilar parameters ( ξ) for the three external loading situations. Results show that dissimilar radial clearances have significant effects on rotor postures, minimum film thickness, stiffness and damping coefficients. Under unbalanced load situations ( Case Right, Case Left), small values of ξ (<1.0) will alleviate and large one ξ (>1.0) will aggravate the misaligned effects. Meanwhile, the minimum film thickness increases with ξ (<1.0) and decreases with ξ (>1.0). For stiffness and damping coefficients, the variations with ξ have no obvious rules. During the design and analysis of hydrodynamic rotor-bearing systems, the dissimilarity should be considered intensively for reaching appropriate results.

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Section: Performance Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%